New! Now get color into your GluBoost products! With MasterTint, GluBoost has added a key innovation to its complete woodworking build and repair system. After a tremendous launch in April, our MasterTint Color additives continue to turn heads. Luthiers and techs alike are singing its praises as a great time and finish saving tool for matching any color quickly and easily. We were pleased to have Tracy Longo, Southern California’s “guitar tech to the stars,” introduce MasterTint and put it through its paces with several usually difficult color matching.